Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5928954 | Tagging hydrocarbons for subsequent identification | Robert T. Roginski, George H. Vickers | 1999-07-27 | $131,420,000 |
| 5843783 | Tagging hydrocarbons for subsequent identification | Robert T. Roginski, George H. Vickers | 1998-12-01 | $123,956,000 |
| 5723338 | Tagging hydrocarbons for subsequent identification | Robert T. Roginski, George H. Vickers | 1998-03-03 | $33,193,000 |
| 5710046 | Tagging hydrocarbons for subsequent identification | Robert T. Roginski, George H. Vickers | 1998-01-20 | $48,491,000 |
| 4878847 | Patchfield system | — | 1989-11-07 |